韩国交通可达性对交通量的影响:一种极端梯度提升方法

IF 2.1 Q3 ENVIRONMENTAL SCIENCES Urban science (Basel, Switzerland) Pub Date : 2023-08-25 DOI:10.3390/urbansci7030091
Sangwan Lee, Jicheol Yang, Kuk Cho, Dooyong Cho
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引用次数: 0

摘要

本研究探讨了汽车、公共汽车和卡车的交通可达性和交通量之间的关系。本研究采用了机器学习技术,特别是极端梯度提升决策树模型(XGB)和Shapley值(SHAP),并从韩国交通研究所、韩国统计局和国家空间数据基础设施门户网站收集了韩国的国家数据源。特征重要性和非线性关系图的几个关键发现如下:首先,除Mart(约50%)外,可达性指标表现出约5%至10%的特征重要性。其次,公交车站和中转站等公共交通基础设施的可及性提高与年平均日交通量(AADT)增加有关,尤其是在首尔和釜山等大都市地区。第三,进入大规模市场可能会对车辆和汽车的交通量产生意想不到的影响。第四,研究表明,AADT率较低与所有三种交通方式的小学入学率较高有关。这项研究有助于(1)理解变量之间的复杂关系,(2)强调交通可达性在交通计划和政策中的作用,以及(3)提供相关的政策含义。
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The Influence of Transportation Accessibility on Traffic Volumes in South Korea: An Extreme Gradient Boosting Approach
This study explored how transportation accessibility and traffic volumes for automobiles, buses, and trucks are related. This study employed machine learning techniques, specifically the extreme gradient boosting decision tree model (XGB) and Shapley Values (SHAP), with national data sources in South Korea collected from the Korea Transport Institute, Statistics Korea, and National Spatial Data Infrastructure Portal. Several key findings of feature importance and plots in non-linear relationships are as follows: First, accessibility indicators exhibited around 5 to 10% of feature importance except for Mart (around 50%). Second, better accessibility to public transportation infrastructures, such as bus stops and transit stations, was associated with higher annual average daily traffic (AADT), particularly in metropolitan areas including Seoul and Busan. Third, access to large-scale markets may have unintended effects on traffic volumes for both vehicles and automobiles. Fourth, it was shown that lower rates of AADT were associated with higher accessibility to elementary schools for all three modes of transportation. This study contributes to (1) understanding complex relationships between the variables, (2) emphasizing the role of transportation accessibility in transportation plans and policies, and (3) offering relevant policy implications.
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来源期刊
CiteScore
4.30
自引率
0.00%
发文量
0
审稿时长
11 weeks
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